<template>
<div>
    <!-- 面包屑导航 -->
     <el-breadcrumb separator="/">
       <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
       <el-breadcrumb-item>用户管理</el-breadcrumb-item>
       <el-breadcrumb-item>用户列表</el-breadcrumb-item>
     </el-breadcrumb>

     <!-- 卡片区域 -->
     <el-card class="box-card">
     <!-- 搜索添加区域 -->
     <el-row :gutter="20">
        <el-col :span="8">
            <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                <el-button slot="append" icon="el-icon-search" @click="getUserList">
                </el-button>
            </el-input>
        </el-col>
        <el-col :span="4">
            <!-- 添加用户 -->
            <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
     </el-row>
     <!-- 用户列表区域 -->
     <el-table :data="userlist" border stripe>
         <el-table-column label="#" type="index">
         </el-table-column>
         <el-table-column label="姓名" prop="username">
         </el-table-column>
         <el-table-column label="邮箱" prop="email">
         </el-table-column>
         <el-table-column label="电话" prop="mobile">
         </el-table-column>
         <el-table-column label="角色" prop="role_name">
         </el-table-column>
         <el-table-column label="状态" prop="mg_mg_state">
             <template slot-scope="scope">
                <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
                </el-switch>
             </template>
         </el-table-column>
         <el-table-column label="操作" width="180px">
             <template slot-scope="scope">
                <!-- 修改按钮-->
                <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                <!-- 删除按钮 -->
                <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                <!-- 分配角色按钮 -->
                <el-tooltip  effect="dark" content="分配角色" placement="top" :enterable="false">
                   <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
                 </el-tooltip>
             </template>
         </el-table-column>
     </el-table>
     <!-- 分页选项 -->
      <div class="block">
    <el-pagination
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
      :current-page="queryInfo.pagenum"
      :page-sizes="[2, 6, 8,10]"
      :page-size="queryInfo.pagesize"
      layout="total, sizes, prev, pager, next, jumper"
      :total="total">
    </el-pagination>
  </div>
     </el-card>
     <!-- 对话框-添加用户 -->
     <el-dialog
        title="添加新用户"
        :visible.sync="addDialogVisible"
        width="50%"  @close="addDialogClose"
        >
        <!-- 内容主体区域 -->
        <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
           <el-form-item label="用户名" prop="username">
             <el-input v-model="addForm.username"></el-input>
           </el-form-item>
             <el-form-item label="密码" prop="password">
             <el-input v-model="addForm.password"></el-input>
           </el-form-item>
             <el-form-item label="邮箱" prop="email">
             <el-input v-model="addForm.email"></el-input>
           </el-form-item>
             <el-form-item label="电话" prop="mobile">
             <el-input v-model="addForm.mobile"></el-input>
           </el-form-item>
        </el-form>
        <!-- 底部-确定取消区域 -->
        <span slot="footer" class="dialog-footer">
          <el-button @click="addDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="addUser" >确 定</el-button>
        </span>
     </el-dialog>
     <!-- 对话框-修改用户 -->
     <el-dialog
     title="修改用户"
     :visible.sync="editDialogVisible"
     width="50%" @close="editDialogClosed">
      <el-form ref="editFormRef" :model="editForm" :rules="editFormRules" label-width="80px">
       <el-form-item label="用户名">
         <el-input v-model="editForm.username" disabled></el-input>
       </el-form-item>
       <el-form-item label="邮箱" prop="email">
         <el-input v-model="editForm.email"></el-input>
       </el-form-item>
       <el-form-item label="手机" prop="mobile">
         <el-input v-model="editForm.mobile"></el-input>
       </el-form-item>
      </el-form>
       <!-- 底部-确定取消区域 -->
        <span slot="footer" class="dialog-footer">
          <el-button @click="editDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="editUserInfo()">确 定</el-button>
        </span>
     </el-dialog>

      <!-- 分配角色的对话框 -->
     <el-dialog
         title="分配角色"
         :visible.sync="setRoleDialogVisible"
         width="50%" @close="setRoleDialogClose">
         <div>
           <p>当前的用户：{{userInfo.username}}</p>
           <p>当前的角色：{{userInfo.role_name}}</p>
           <p>分配新角色：
               <el-select v-model="selectedRoleId" placeholder="请选择">
                <el-option
                  v-for="item in rolesList"
                  :key="item.id"
                  :label="item.roleName"
                  :value="item.id">
                </el-option>
              </el-select>
           </p>
         </div>
         <!-- 底部确定取消 -->
         <span slot="footer" class="dialog-footer">
           <el-button @click="setRoleDialogVisible = false">取 消</el-button>
           <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
         </span>
       </el-dialog>
</div>
</template>

<script>
export default {
  created () {
    this.getUserList()
  },
  data () {
    // 验证邮箱的校验规则
    var checkEmail = (rule, value, cb) => {
      const regEmail = /^\w+@\w+(\.\w+)+$/
      if (regEmail.test(value)) {
        return cb()
      }
      // 返回一个错误提示
      cb(new Error('请输入合法的邮箱'))
    }
    // 验证手机的校验规则
    var checkMobile = (rule, value, cb) => {
      const regMobile = /^1[34578]\d{9}$/
      if (regMobile.test(value)) {
        return cb()
      }
      // 返回一个错误提示
      cb(new Error('请输入合法的手机号码'))
    }
    return {
      // 获取用户列表的参数对象
      queryInfo: {
        query: '',
        // 当前的页数
        pagenum: 1,
        pagesize: 2
      },
      userlist: [],
      total: 0,
      // 控制对话框隐藏显示
      addDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '用户名的长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '密码的长度在 6 到 15 个字符', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入电话', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 控制修改用户对话框的现实隐藏
      editDialogVisible: false,
      // 查询到的用户信息对象
      editForm: {},
      // 修改用户表单-校验规则
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入电话', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 分配角色对话框的显示和隐藏
      setRoleDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: {},
      // 所有的角色的数据列表
      rolesList: {},
      // 选中的角色id
      selectedRoleId: ''
    }
  },
  methods: {
    // 获取用户列表
    async getUserList () {
      const { data: res } = await this.$http.get('users', { params: this.queryInfo })
      if (res.meta.status !== 200) {
        this.$message.error('user组件-获取用户列表失败')
      } else {
        this.userlist = res.data.users
        this.total = res.data.total
        // console.log(res)
      }
    },
    // 监听（条/页）改变
    handleSizeChange (newSize) {
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听（页码）改变
    handleCurrentChange (newPage) {
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 监听switch开关状态
    async userStateChanged (userInfo) {
      // console.log('数据类型:' + typeof (userInfo.id))
      const { data: res } = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
      if (res.meta.status !== 200) {
        this.$message.error('更新用户状态失败')
        userInfo.mg_state = !userInfo.mg_state
      } else {
        this.$message.success('更新用户状态成功')
      }
    },
    // 监听对话框的关闭事件
    addDialogClose () {
      this.$refs.addFormRef.resetFields()
    },
    // 点击按钮，添加新用户
    addUser () {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) {
          return this.$message.error('校验不通过')
        } else {
          // 校验通过，可以发起网络请求
          const { data: res } = await this.$http.post('users', this.addForm)
          if (res.meta.status !== 201) {
            this.$message.error('添加用户失败')
          } else {
            this.$message.success('添加用户成功')
            // 隐藏添加用户的对话框
            this.addDialogVisible = false
            // 重新获取用户列表数据
            this.getUserList()
          }
        }
      })
    },
    // 打开修改用户对话框
    async showEditDialog (id) {
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('查询用户信息失败!')
      } else {
        this.editForm = res.data
        this.editDialogVisible = true
      }
    },
    // 关闭修改用户对话框之后 重置表单
    editDialogClosed () {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户
    editUserInfo () {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) {
          return this.$message.error('校验不通过')
        } else {
          // 发起修改用户请求
          const { data: res } = await this.$http.put('users/' + this.editForm.id, {
            email: this.editForm.email,
            mobile: this.editForm.mobile
          })
          if (res.meta.status !== 200) {
            return this.$message.error('更新用户信息失败')
          } else {
            // 成功-关闭对话框-刷新数据列表-提示修改成功
            this.editDialogVisible = false
            this.getUserList()
            this.$message.success('更新用户信息成功')
          }
        }
      })
    },
    async removeUserById (id) {
      // 弹框询问用户是否删除用户操作
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // console.log(confirmResult)
      // 打印的字符串 确定-confirm 取消-cancel
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      } else {
        const { data: res } = await this.$http.delete('users/' + id)
        if (res.meta.status !== 200) {
          return this.$message.error('删除用户失败')
        } else {
          this.$message.success('删除用户成功')
          this.getUserList()
        }
      }
    },
    // 显示分配角色对话框
    async setRole (userInfo) {
      this.userInfo = userInfo
      // 在展示对话框之前，获取所有角色列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败')
      }
      this.rolesList = res.data
      this.setRoleDialogVisible = true
    },
    // 点击按钮，分配角色
    async saveRoleInfo () {
      if (!this.selectedRoleId) {
        return this.$message.error('请选择一个角色')
      }
      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, {
        rid: this.selectedRoleId
      })
      if (res.meta.status !== 200) {
        return this.$message.error('更新角色失败')
      }
      this.$message.success('更新角色成功！')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    // 监听分配角色对话框的关闭事件
    setRoleDialogClose () {
      this.selectedRoleId = ''
      this.userInfo = {}
    }
  }
}
</script>

<style lang="less" scoped>
</style>
